.wrapper{
    width: 1200px;
    height: 800px;
    margin: 0 auto;
}
.ypage-content{
    background-image: url("../img/plug/background1.png");
    background-repeat: no-repeat;
    width:100%;
    height:100%;
    /* background-size: 100%; */
}
.covered{
    background-image: url("../img/plug/background.png");
    width: 100%;
    height: 100%;
    background-size: 100%;
    float: right;
}
.device{
    background-image: url("../img/plug/plug.png");
    width: 30%;
    height: 100%;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: 0 50%;
    margin-left: 4%;
}
.covered p{
    font-family: 微软雅黑;
    font-weight: bold;
    font-size: 20px;
    margin: 0;
    line-height:40px;
}
.line{
    background-image: url("../img/plug/line.png");
    width: 60%;
    float: right;
    height: 5%;
    background-color: white;
}